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Finding the Fourth Proportional to 5,422.03, 8,129.10 and 3,662.67

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Solution

The fourth proportional to 5,422.03, 8,129.10 and 3,662.67 is: 5,491.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.03 : 8,129.10 = 3,662.67 : x
  2. Step 2: Convert to fraction form
    5,422.03/8,129.10 = 3,662.67/x
  3. Step 3: Cross multiply
    5,422.03x = 8,129.10 × 3,662.67
  4. Step 4: Simplify right side
    5,422.03x = 29,774,210.70
  5. Step 5: Solve for x
    x = 29,774,210.70/5,422.03
  6. Step 6: Final answer
    x = 5,491.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.